package com.day16.java2;
/*
 *如何自定义异常类？
 * 1.继承于现有的异常结构：RuntimeException、Exception
 * 2.提供全局常量：serialVersionUID
 * 3.提供重载的构造器
 */
public class MyException extends RuntimeException{
    static final long serialVersionUID = -7034897190745766939L;
    public MyException(){}
    public MyException(String msg){
        super(msg);
    }
}
